Awwh, how sweet you are! That comment made me happy inside.
I don't feel that way ALL THE TIME, but sometimes I wonder who really thinks I'm beautiful - no exceptions. Of course, I'm blessed with a lovely family, great friends, etc... They tell me I am, but I feel like they're obliged. Like you said, I see those everyone else and can't help but feel like I don't belong. I'm 5'2"-ish, and have a busty body shape. Most people think it's attractive, but I see those blonde girls who are stick thin and feel weird inside. My face isn't very flattering, either.
Yet again, I can tell that you have a GORGEOUS mind, just for adding a wonderful comment like that. You are truly a blessing to my life, Stranger. You change lives without knowing - never stop that. Don't worry about how tall you are, your weight, your nose (I was cursed with my dad's nose too), etc. - the fact that you put a comment as uplifting as that shows that you ARE beautiful -
no exceptions.